Methods and apparatus of video coding in 4:4:4 chroma format
US12309369B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2022 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | May 11, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic apparatus performs a method of decoding video data, comprising: receiving, from bitstream, video data corresponding to a coding unit, wherein the coding unit is encoded in inter prediction mode or intra block copy mode; receiving a first syntax element from the video data, wherein the first syntax element indicates whether the coding unit has any non-zero residuals; in accordance with a determination that the first syntax element has a non-zero value: receiving a second syntax element from the video data, wherein the second syntax element indicates whether the coding unit has been encoded using adaptive color-space transform (ACT); in accordance with a determination that the first syntax element has a zero value: assigning the zero value to the second syntax element; and determining whether or not to perform inverse ACT on the video data of the coding unit in accordance with a value of the second syntax element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.